urdee rudee udree duree rduee druee urede ruede uerde eurde reude erude udere duere uedre eudre deure edure rdeue dreue redue erdue derue edrue urdee rudee udree duree rduee druee urede ruede uerde eurde reude erude udere duere uedre eudre deure edure rdeue dreue redue erdue derue edrue ureed rueed uered eured reued erued ureed rueed uered eured reued erued ueerd euerd ueerd euerd eeurd eeurd reeud ereud reeud ereud eerud eerud udeer dueer ueder euder deuer eduer udeer dueer ueder euder deuer eduer ueedr euedr ueedr euedr eeudr eeudr deeur edeur deeur edeur eedur eedur rdeeu dreeu redeu erdeu dereu edreu rdeeu dreeu redeu erdeu dereu edreu reedu eredu reedu eredu eerdu eerdu deeru ederu deeru ederu eedru eedru
Note: these 'words' (valid or invalid) are all the permutations of the word urdee. These words are obtained by scrambling the letters in urdee.